The reaction of isopropyl alcohol with acetic acid was carried out in an isothermal batch reactor in presence of solid resin catalyst to produce isopropyl acetate and water. A novel solid resin catalyst Indion 140 was used in the present study. The temperature of reaction mixture was maintained in the range of 333.15 – 363.15 K. The effects of reaction temperature, catalyst loading, mole ratio, size of catalyst, agitation speed were investigated on acetic acid conversion. Further, pseudo-homogeneous kinetic model was developed for the catalyzed reaction. The forward reaction rate constants and activation energies were determined from the Arrhenius plot. The forward and backward activation energies are found to 53,459 J/mol and 54,748 J/mol, respectively. The heat of reaction is −1.289 kJ/mol with Indion 140 catalyst. The mathematical equation was developed for frequency factor as function of the catalyst loading and found that it follows a linear relationship between frequency factor and catalyst loading. The simulations were performed for pseudo homogeneous kinetic model and found that the model is able to predict the experimental data very well. The developed kinetic equation is useful for the simulation of a reactive distillation column for the synthesis of isopropyl acetate.

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新型固体催化剂存在下乙酸与异丙醇酯化的动力学研究

异丙醇与乙酸的反应在固体树脂催化剂存在下的等温间歇反应器中进行，以生产乙酸异丙酯和水。在本研究中使用新型固体树脂催化剂Indion 140。反应混合物的温度维持在333.15 – 363.15K。研究了反应温度，催化剂负载量，摩尔比，催化剂尺寸，搅拌速度对乙酸转化率的影响。此外，开发了用于催化反应的拟均相动力学模型。正向反应速率常数和活化能由Arrhenius图确定。发现向前和向后的活化能分别为53,459 J / mol和54,748 J / mol。用Indion 140催化剂的反应热为-1.289kJ / mol。建立了频率因数与催化剂负载量函数的数学方程式，发现该数学方程遵循频率因数与催化剂负载量之间的线性关系。对伪均质动力学模型进行了仿真，发现该模型能够很好地预测实验数据。所开发的动力学方程对于模拟乙酸异丙酯合成反应蒸馏塔很有用。